高二英语The environment教案

Unit6 The Environment教案
一、单元分析（Unit Analysis）
（一）单元地位（Unit Position）
1．本单元主要介绍了人类活动对海洋造成的影响。

通过本单元的学习，学生能够了解海洋生态环境的现状以及面临的问题和危机，认识到人类活动对环境造成的破坏。

从而注重环保意识的培养，爱护我们生存的地球，并付诸于行动，劝阻制止环境污染的行为。

2．本课继续学习动词不定式结构，重点为动词不定式的被动结构，对于这一语法现象，教师有必要在课堂教学中加以一定的句型操练。

可多设计一些句型转换练习。

3.在学习技巧中，意群的介绍为学生提供更有效的阅读方法。

（二）单元目标（Unit Target）
1．了解不定式被动结构的含义与用法，并能熟练运用到句型结构中。

2．能描述人类活动对环境产生的影响及此过程中环境发生的变化。

3．能就环保话题发表自己的见解。

4．了解识别意群，改善阅读习惯。

（三）单元重点（Unit Points）
1．关键词：
语言知识类
n. threat, species, cycle, pollution, limit
v. circulate, affect, destroy, disturb, recover
adj./adv. eventually, rare, long-term, vast
expressions: under threat, have effects on, as a result, food chain,
set limits for, pile up, agree on, in the future, large numbers of,
a great deal, all over the world, cause s
b to do, for fun
◆交际功能类
1）有关海洋：ocean, wave, seawater, marine creature, tropical island, coast, coastal city/area, port, coral reef, shellfish,
continental shelf…
2）环境破坏：industry, dump, overfishing, acid rain, greenhouse effect, sandstorm, destroy, pollution, pollutant, wastes, chemicals,
soil erosion, poison, extinct …
3) 环境保护：take care of plants, love animals, preserve wildlife,
recycle used things, reduce wastes, collect dead
batteries, say “No” to disposable chopsticks…2．功能：
Talking about the pollution and protection of environment（描
述“环境污染和环境保护”）
●… can have harmful effects on …
●… are the most common problems.
●One of the biggest threats to … is pollution from…
●… be reported to have long been polluted by …
●… disturb the natural cycles of …
●What we do in one part of the ocean/area can affect another.
●… is under threat now.
●… is to be done to prevent pollution.
3 语法点：
本课以不定式的被动结构为重点，在学习过程中，可多进行句子合并，句型操练和
主动、被动句式的转换。

二、教学设计（Teaching Designs）
[链接1]
1请同学想象并描述大海的景色，了解一些与海洋有关的词汇以及一些常见海洋生物的名称，随后提出句式－－I shall compare the sea to …――让学生发挥想象，自由比喻，并略作解释。

学生可能做的比喻：mother, angel, poet, song, diamond, crystal …2展示对比图片，遭人为破坏的海洋惨不忍睹，再次做比喻，讨论发生了什么，人类对海洋做了什么。

3分组，由于环保话题比较专业，较难，先让各组想出尽可能多的有关环境遭破坏后果的中文名词，记下。

如：“酸雨”“沙尘暴”“沙漠化”“温室效应”“生物灭绝”等等。

4教师给出大量英文的此类名词，让学生找出之前记下的中文名词所对应的英文词汇，各组记录。

如：acid rain, sandstorm, greenhouse effect, extinction, iceberg melting, etc.
5教师给出图片，请同学用刚学的英文词汇说出图片所显示的是哪一种环境问题，并根据提供的关键词描述环境所发生的变化。

[链接2]
图表作文是近年来高考常见的题型，对于高二学生可开始有所接触，对作文能力可暂不作过高要求，只要求能够简单描述图表，在教师的提示帮助下，分析这一现象的出现原因和带给人们的启示。

Village population: 5623
[papermaking factories will produce benzidine(联苯胺), which causes cancer.]
This used to be a quiet and beautiful small village… In 1970s… In 1990s, the papermaking industry was developing very quickly… Now, the river is red, the air is dirty, and….
[链接3]
用。

2.给出一系列图片，请同学联想一次性筷子的使用与各种灾难的发
生之间的联系，并描述由因到果的变化过程。

[链接4]
Issues to Be Covered (For Reference)
●How was the Suzhou Creek in the distant past?
●What was the role of Suzhou Creek in people’s l ife at that time?
●How was the Suzhou Creek polluted?
●How did the dirty river affect people’s daily life?
●What measures have been taken to make the river clean in recent
years?
●How does the river look now after years of cleaning up?
[链接5]
●想象你是一条海底的小丑鱼Nimo，使用以下的一些词, 发挥想象，
编写一则故事----The Adventure of Nimo
words for reference ：dream, separate, attractive, fisherman, destroy,
dishonest…
教师可给出任意词汇，互不相关也无妨，越是没有关联的词越能让学生自由想象，不受拘束。

[链接6]
一目一词的阅读方式不仅速度慢，而且影响理解，无法形成完整的概念，效率高的读者总是将眼睛从一组词移向另一组词，即一个意群一个意群地阅读。

如：/The first coins minted /were handed /to the president's wife, Martha Washington /by the first Director of the Mint,/David Rittenhouse,/
请按照意群划分以下句子：
Stricter Traffic Law can Prevent Accidents. From the health point of view we are living in a marvelous age. We are immunized from birth against
many of the most dangerous diseases. A large number of once fatal illnesses can now be cured by modern drugs and surgery. It is almost certain that one day remedies will be found for the most stubborn remaining diseases. The expectation of life has increased……
（答案并不唯一，以下可参考。

）
Stricter Traffic Law\\ can Prevent Accidents. From the health point of view \\ we are living \\ in a marvelous age. We are immunized from birth \\ against many of the most dangerous diseases. A large number of \\ once fatal illnesses \\ can now be cured \\by modern drugs and surgery. It is almost certain that \\ one day \\ remedies will be found \\ for the most stubborn remaining diseases. The expectation of life \\ has increased……
[链接7]
第一层次主动被动转换
1.We don’t allow you to take the books out of the reading-room.
The books are not allowed to be taken out of the reading-room.
2.The manager wants his secretary to type the letter at once.
The manager wants the letter to be typed at once.
3.We have to make laws to stop killing those rare species of marine
creatures.
Laws have to be made to stop killing those rare species of marine creatures.
4.We are to make laws and to enforce regulations to prevent overfishing
and pollution.
Laws are to be made and regulations are to be enforced to prevent overfishing and pollution.
5.Newspapers report chemicals have polluted many coastal cities and
ports.
Many coastal cities and ports are reported to have been polluted by chemicals.
第二层次句子合并
1.I am invited to give a lecture here. I feel this is a great honour.
It is an honour for me to be asked to give a lecture here.
2.We will discuss a subject today. The subject is something about body
language.
The subject to be discussed today is something about body language.
3.He often scratches the deer. The deer likes it.
The deer likes to be scratched.
4.You should use some aid in your speech. Eye contact is a very
important aid.
Eye contact is a very important aid to be used in your speech.
5.He was criticized by the teacher in class. That made him very
unhappy.
To be criticized by the teacher in class made him very unhappy.
第三层次改写故事
The cat considered it impossible and funny that rats wanted to kill him. However, the rats would discuss the same topic that evening in a very serious manner. And now I request you, my students, to imagine a crowded underground meeting-room in the rats' world...
"Young boys", said one old rat, "I feel it a must to get back our normal life. We have been living in fear and misery for such a long time. And now, we have had enough! Enough! We must eliminate the cat! We must get back our old day!
The old rat continued to lecture the younger ones about the good old days when there was no cat and life was peaceful. All the rats who were present at the meeting suddenly felt it a very necessary task to kill the cat. Hatred was growing in every young rat's heart and they all agreed that they need to accomplish the mission as soon as possible, and they did have had enough…
Students, our story just begins, however, we don't have time to finish it. But don't worry. We will continue the story later.
_______________by the rats seemed impossible and even funny to the cat. However, the same topic
__________________at the rats' meeting that evening would be very serious to the rats themselves. And now I request you, my students, to imagine a crowded underground meeting-room in the rats' world...
"Young boys", said one old rat, "I feel it a must to get back our normal life. We have been living in fear and misery for such a long
time. And now, we have had enough! Enough! The cat is _________________! Our old day is ________________! ..."
The old rat continued to lecture the younger ones about the good old days when there was no cat and life was peaceful. All the rats who were present at the meeting suddenly felt it a very necessary task to kill the cat. Hatred was growing in every young rat's heart and they all agreed that the mission needed
___________________as soon as possible, and they did have had enough...
Students, our story just begins, however, we don't have time to finish it. But don't worry. The story
___________________ter.
教师助手 学生帮手 家长朋友
教师助手 学生帮手 家长朋友
Keys :
To be killed by the rats seemed impossible and even funny to the cat. However, the same topic to be discussed at the rats' meeting that evening would be very serious to the rats themselves. And now I request you, my students, to imagine a crowded underground meeting-room in the rats' world...
"Young boys", said one old rat, "I feel it a must to get back our normal life. We have been living in fear and misery for such a long time. And now, we have had enough! Enough! The cat is to be eliminated ! Our old day is to be restored! ..."
The old rat continued to lecture the younger ones about the good old days when there was no cat and life was peaceful. All the rats who were present at the meeting suddenly felt it a very necessary task to kill the cat. Hatred was growing in every young rat's heart and they all agreed that the mission needed to be accomplished as soon as possible, and they did have had enough... Students, our story just begins, however, we don't have time to finish it. But don't worry. The story is to be continued ter.。